Sony Micro Vault Classic 512 MB USB Flash Drive (USM512J) Pre-loaded with Virtual Expander software for up to three times the storage capacity Retractable USB Connector for USB 2.0 and 1.1 Ports Sleek Sony Classic USB flash drive design available in 512 MB, 1 GB, 2 GB, 4 GB and 8 GB capacities Storing, sharing and transporting data is easier than ever Compatible with Windows 98, 2000, ME, XP and MAC OS 9 and higher